do some black people think being a fan of non black ppl is bad?

Sorry if my grammar in the title sucks.. anyways I’m asking this because I saw someone saying they’re a black fan of some white(?) or non black YouTuber, and someone replied under saying “Why are you even a fan of someone non black???” And I’ve seen this being said a few times before as well, forgive me if I’m being rude or insensitive or something but .. I don’t really understand the problem with black people being fans of non black YouTubers or celebrities? Or maybe I’m misunderstanding what they meant. Sorry if this is also a stupid question I’m just genuinely curious cause I have seen this kind of comment before!